From what you've shared here my guess is that it's not so much a physical problem as a mental one. She is probably jst nervous about the whole thing which is making her tense, etc. Like other have already suggested, it's really important to take things slow. Get here to know her own body and be comfortable with it and then move to doing more things together. The more laid back she is able to be about sex, the more she'll relax and enjoy what's going on. Don't let her have sex for the first time while generally tense and physically unprepared for it! 
__________________
"The world is so exquisite with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there’s little good evidence. Far better it seems to me, in our vulnerability, is to look death in the eye and to be grateful every day for the brief but magnificent opportunity that life provides"
-Carl Sagan
|